Method of rolling metal sheets.



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A. H. BEALE.

METHOD o1" ROLLING METAL SHEETS.

APPLICATION FILED MAY 11, 1908.

926,233 Patented June 29, 1909.

INVENTOR 'UNITED STATES PATENT oEEIcE.

ADDISON H. BEALE, OF VANDERGRIFT, PENNSYLVANIA, ASSIGNOR TO AMERICANSHEET & TIN PLATE COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OFNEW JERSEY.

METHOD OF ROLLING METAL SHEETS.

Specification of Letters Patent.

Patented June 29, 1909.-

Applcation led May 11, 1.908. Serial No. 432,077.

To all whom' it may concern:

Be it known that I, ADDISON H. BEALE, of Vandergrift, in the county ofWestmoreland and State of Pennsylvania, have invented a new and usefulMethod of Rolling Metal Sheets, of which the following is a full, clear,and exact description, reference being `had to the accompanyingdrawings, forming part of this specification, in which- Figure l is asectional elevation, showing the first pack formed according to apreferred form of my method; and Fig. 2 is the second pack formed afterrolling, opening, reforming the pack and doubling.

My invention relates to the rolling of sheets from metals which aredifficult or impossible to roll to thin gages in the ordinary manner ofsheet rolling. For example, in attempting to roll thin sheets from Monelmetal, it has been found that the' metal breaks and Will not draw out inrolling it into these thinnergages by itself. This Monel metal is analloy of nickel and copper, with nickel predominating, and usually inthe 1proportion of about seventy-five per cent. o vnickel to twenty-fiveper cent. of copper. It has certain desirable characteristics,especially as regards corrosion and hence sheets formed from it Wouldhave commercial advantages. I have discovered that by sandwiching theplates or .sheets of this Monel metal with soft plates of iron or steel,I can roll this Monel metal into thin` gages successfully.

In carrying out the method in its preferred form, I roll out two sheetbars of soft steel' and two sheet bars of Monel metal, as singles. Ithen make a pile of three of these rolled bars, as in Fig.. l, theoutside bars 2, 2, beiner steel and the inner bar 3 being of Monelmetal. This pile of three is then reheated and rolled out, preferably tosuicient length to permit doubling. I then preferably open the pack andre-form it, referably by laying the plate or sheet of Monel metal on oneor more of the steel sheets, and doubling this pack With the Monel metalon the inside. This re-formed pack, therefore, as shown invFig. 2,consists of a doubled Monel metal sheet 3, With preferably two plies ofsteel 2a on each side thereof. Such pack is then reheated and rolled outto give the desired gage.

The advantages of my invention will be apparent to those skilled in theart, since a practical and successful method is obtained for rollingsheets from alloys or metals which can not be rolled to thin gages bythemselves. 'The Steel appears to act both as a cushion for the othermetal and also to aid in holding the heat in the other metal, whensandwiched, as above described.

My process is not to be confused with processes of rolling compoundsheets, since the invention is designed to give sheets of a single'metal or alloy, the final pack being opened after each pass to preventthese sheets from Welding.

Many variations may be made in the process, for example, the piles maybe Varied as to the number of plies, the thickness of the bars or sheetsmay be varied, and the particular arrangement of the sheets may bechanged without departing from my invention, Which consists broadly inassociating the bars or plates of the other metal or other alloy Withbars or plates of soft iron or steel during the rolling operation.

I claim:

1. The method of producinr thin sheets of metals or lalloys of badrolling qualities on account of breaking, &c., as compared with iron orsteel, consisting in associating a bar or plate of Said metal or alloywith a bar or plate of iron or steel, and then rolling and therebyelongating and thinning the same substantially as described.

2. The method of producino thin sheets of metals or alloys of badrolling qualities -on account of breaking, &c., as compared With iron orsteel, consisting in associating a bar or plate of said metal or alloywith a `bar or plate of iron or steel, doubling the pack, and rollingand thereby elono'ating and thinningl the doubled pack; slibstantiallyas described.

3. The method of roducing thin sheets of metals or alloys ofP badrolling qualities on account of breaking, &c., as compared with iron orsteel, consisting in ,associating a bar o1' plate of said metal or alloywith a bar or plate of iron or steel, doubling the pack into a pack withthe iron or steel forming the outer layers thereof, and then rolling andthereby elongating and thinning the doubled pack; substantially asdescribed.

4. The method of producing thin sheets of metals or alloys of badrolling qualities ou account of breaking, &c., as compared with iron orsteel, consisting in associating a bar or plate of said metal or alloywith a bar or plate of iron or steel, doubling the pack with the iron orsteel outside, reheating the pack, and rolling and thereby elongatingand thinning said doubled pack; substantially as described.

5. The method of producing thin sheets of metals or alloys of badrolling qualities on account of breaking, &c., as compared with iron orsteel, consisting in sandwiching said metal or alloy between iron orsteel sheets or plates, and rolling and thereby elongating and thinningthe same; substantially as described.

6. The method of producing thin sheets and rolling and therebyelongating and thinning the same; substantially as described.

In testimony whereof, I have hereunto set my hand. ADDISON H. BEALE.Witnesses:

R. G. SCOTT, Jr., I. K. DARBAKER.

